Run Tcpdump
Tcpdump is a common packet analyzer that allows network administrators to display TCP/IP and other packets transmitted or received over the IP telephony network, for debugging purposes.
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1.
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In the Android Device Utility (see Android Device Utility for more information about the application), enter the phone's IP address, click SSH Connect and browse to a folder on the PC to which to send the information. |
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2.
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Next to the Tcpdump button, set the time period or leave it at the default. Default: 30 seconds. |
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3.
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Click the Tcpdump button and then after the progress indicator reaches the end you'll view in the results pane a 'Finished' indication. |
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4.
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Open the folder on the PC to which you commanded the application to send the information and locate and open the file 'net.pcap'. |
Alternatively, run Tcpdump without the utility.
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➢
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To run tcpdump without the utility: |
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1.
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Access the phone via SSH and run the following commands: |
setprop ac.ac_tcpdump.timeout <seconds>
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2.
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After defining the capturing time as shown in the preceding command, start the capture: |
setprop ac.ac_tcpdump 1
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3.
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Tcpdump capture file will appear in this location: |
/sdcard/recording/net.pcap
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4.
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After running Tcpdump, reproduce the issue. |
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5.
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Execute the following command from your PC command prompt (cmd): |
scp -r admin@%deviceIp%:/sdcard/recording/ %FolderOnPc%